PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-15:13:10
G02     201.6          20.2               10.3 +/-    1.71      22.5 +/-    1.71  0.140 / 0.330
G06     166.6          57.9               10.2 +/-    0.81      11.8 +/-    0.81  0.150 / 0.330
G12     302.0          10.6               -3.8 +/-   20.21     -10.5 +/-   20.21  0.090 / 0.120
G13     225.5          11.7                6.8 +/-    3.97      18.2 +/-    3.97  0.130 / 0.140
G17     25.8           57.2                7.7 +/-    0.81       9.0 +/-    0.81  0.090 / 0.330
G19     317.5          70.1                6.9 +/-    0.48       7.3 +/-    0.48  0.150 / 0.310
G24     307.6          32.4                5.9 +/-    1.37       9.8 +/-    1.37  0.090 / 0.420
G28     90.0           38.7                8.5 +/-    0.50      12.7 +/-    0.50  0.090 / 0.360
G30     157.9          14.1                9.7 +/-    0.90      24.6 +/-    0.90  0.030 / 0.050